Accession Number:

ADA343677

Title:

Modeling of Optical Beam Spread in Sea Ice

Descriptive Note:

Final rept.

Corporate Author:

SEQUOIA SCIENTIFIC INC MERCER ISLAND WA

Personal Author(s):

Report Date:

1998-05-01

Pagination or Media Count:

43.0

Abstract:

This two year theoretical investigation of the optical properties of first year sea ice yielded several important results 1 beam spread function measurements provide an important constraint on inversion of optical data to obtain ice scattering properties 2 several hundred optical path lengths can be required to approach the asymptotic radiance distribution for point light sources, even though the ice is highly scattering 3 photon diffusion theory gives a reasonably good description of light propagation deep within sea ice and, more importantly, shows that sea ice scattering phase functions are highly peaked near the forward scattering direction 4 classical radiative transfer theory is adequate for prediction of light propagation within sea ice, and 5 it is possible to begin with sea ice physical properties and proceed in a rigorous fashion to predict sea ice inherent and apparent optical properties.

Subject Categories:

  • Snow, Ice and Permafrost

Distribution Statement:

APPROVED FOR PUBLIC RELEASE